jackass | sense examples, Usage and Definition from wordnet dictionary online

Noun jackass has 2 senses

fathead, goof, goofball, bozo, jackass, goose, cuckoo, twat, zany - a man who is a stupid incompetent fool
--₁ is a kind of fool, sap, saphead, muggins, tomfool
jack, jackass - male donkey
--₂ is a kind of ass